Microalgae – Oxygen Producers

📚 Key Concepts

🔹 Microalgae: Tiny Powerhouses

What are Microalgae?

• Microscopic plant-like organisms
• Contain chlorophyll for photosynthesis
• Found in water, soil, air, on trees
• Single-celled or simple multicellular

🔹 Oxygen Production

Global Oxygen Contributors:

• Microalgae: Produce >50% of Earth’s oxygen
• Land plants: Contribute remaining oxygen
• Photosynthesis equation: 6CO₂ + 6H₂O + Light → C₆H₁₂O₆ + 6O₂

Importance:

• Atmospheric oxygen: Essential for all aerobic life
• Carbon dioxide removal: Helps reduce global warming
• Marine ecosystems: Base of aquatic food webs

🔹 Commercial Applications

1. Health Supplements

• Spirulina:
  • Protein content: >60% of body weight
  • Rich in vitamin B12
  • Superfood status
  • Easy cultivation

2. Nutrition

• Chlorella: High protein and vitamins
• Diatoms: Source of omega-3 fatty acids
• Nutritional supplements: For humans and animals

3. Environmental Applications

• Water purification: Remove pollutants
• Biofuel production: Alternative energy source
• Carbon sequestration: Climate change mitigation

🔹 Spirulina Cultivation

Simple Growing Method:

1. Setup: Clear glass tank with moderate sunlight
2. Medium: Pond water
3. Inoculation: Add living Spirulina
4. Maintenance: Stir twice weekly
5. Harvesting: Filter after 3-6 weeks
6. Processing: Dry and powder for consumption

Economic Benefits:

• Low-cost production: Minimal investment
• High yield: Rapid multiplication
• Sustainable: Environmentally friendly
• Market demand: Growing health consciousness